Safety stop device.



R. P. BARRY & J. w. MURPHY. SAFETY STOP DEVICE. APPLICATION TILED EBPT. 16, 1911v 2 SHEETS-SHEET 1.

Patented Oct. 1, 1912.

R. P. BARRY & J. W. MURPHY.

' SAFETY STOP DEVICE.

APPLICATION r1121) SEPT. 16, 1911.

1,039,687. Patented 0011,1912.

2 SHEETSSHEET 2.

wi/bnwaeo:

v is a specification,

UNITED STATES f iTEN-T OFFICE.

RICHARD P. BARRY AND JOHN w. MURPHY, or BRooKLYN, NEW YORK.

SAFETY s'roP DEVICE.

Be itlmo'wn that"we,fRrcnAim P; BARRY and Join: W. MURrHY, citizens of the United States, residing at Brooklyn in the county of Kings, State of New Yorlr, have invented new and useful Improvements in Safety Stop Devices, of which the following This invention relates to automobiles and similar vehicles and the principal object of the invention is to produce a safety stop device which will enable the vehicle to be stopped instantly at the will of the chauffour, to prevent collisions, and to prevent skidding, p

A further object of the invention is'to rendent v mechanism automatically operative thro h; the medium of the bumper at the forwa .d'end of the car or vehicle.

.' In carrying out the invention, shoes or similar devices attached to the car are normally held in a raised or inoperative position arranged to be brought to the ground so as to raise the rear or driving wheels of the vehicle off of the ground. This in stantly arrests the propelling action of the wheels, and stops the car also by reason of the absorption of energy due to the lifting of theweight of the car.

While the device is intended primarily for an emergencyjstopping device, it is also useful to perfor the function of a jack to raise the rear axle hen on the road to permit the repair of a wheel or tire. The device may also be used to arrest a car whichmay be running'laway on a down grade, and t e mechanismtherefore gives a .very comple controlofthe car.

The invention consists in the construction and combination of parts to be more fully described hereafter and particularly set forth in the claims.

I In the drawing which fully illustrates the invention Figure 1 is a longitudinal vertical;

section through the frame of an automobile to which the invention is applied. -'Fig. 2 is a 'view similar to Fig. 1, but showing only or portion of the-mechanism upon an enlarge'd scale. Fig. 3 is a vertical section taken on the line 33 of Fig.1, but upon the same scale as Eig. 2. Fig; {i is a vertical section on the line 4-4 of Fig.1, and this view is'also upon the same scal as ,Fig. 2.;

5 is a view looking from rent to Specification of Letters Patent. Application filed September 16, 1911. Serial No. 649,766.

Patented Oct. 1,1912.

the rear between the rear wheels of the automobile and showing the means for mounting the safety shoes'on a squareaxle. Fig. 6

-is a vertical section taken just forward of the axle showing means for securing the shoes to a round axle or axle cases Big. 7

further illustrates the parts shown in Fig.

6, the axle being shown in cross section;

The frame 1 of the automobile or other vehicle comprises two side bars 2 which may be of the usual channel form, said iframe being supported on the rearbaxle 3 and forward axle 4 by means of the usual springs 5. The vehicle is provided with the rear wheels 6 and forward wheels 7 mounted in any suitable manner on the axles.

To the rear axle 3 we attach a pair of clamps 8; the lower 'portions of which are formed into hanger 9, to which the safety shoes 10 are, pivotally secured by suitable pivot bolts 11. These shoes have runners'or feet 12 which are adapted to come upon the ground as illustrated in Fig. 1, and these runners are preferably formed with upwardly extending toes 13 at their rear ends. The underface of each runner provided with a wearing strip 14 of steel or any suitable material. The shoes have thr eradial arms which connect the runner. 12 ith the hub 15, and near the rear ends of the-ru n ners 12 the shoes are connected by a t iansverse tie bar 16. In order to hold the shoes normally raised in the position indicatedfin the dotted lines in Fig. 1, the shoes have :=fending between the side bars 2 of the frame. 'The ends of this cross shaft are suitably mounted in bearings mounted on the inner sides of the side bars; as indicated in Fig. 4,. but the extremities of this shaft do not extend through the side bars 2.

Rigidly mounted on the cross shaft 19 preferably at one side of the frame, there is provided a ratchet wheel 21 with which cooperatesa pawl 22 pivotally mounted on a suitable bracket 93. When this pawl is in engagement with the ratchet wheel it will evidently prevent a rotationof the cross shaftend will therefore normally operate" to hold the arm 18 in the elevated position extrern-itix 'gfagheegm 181ardjstancej collar 24 is pliavidefl. *Witli fiherzi-tehetf'whel 21 there is provided a'small c'hain wheel or around a chain wheel or drum 27 which is aar'igidbe; $Qlillj1fitbi$j Etu'b shaft 28; 01 1.. piryof 'small diameter which is r o tategll y;mgnj ted in a bearing 29 On thEs iklG -L" BaF' b'fei' fr me. In p der to en bl marge e e eir wisei tkand'amn dibhisiwhee passes a lit-.-. "mg chain'26'which passesforwardly. from v the upperfaceof the Wheel and chen'de teeth when t he Referring again to t e mas and the 'mea'ns -ior' supporting'lhe same; from the axle'as shown in Fig. 5, when there ar axle square; we simply employ ,chez lamps S and aggaeh t he x n jgo the axle near t e clips 5:9,whih"s'eiii e fli springs 5 t0 the axle. 5 When the axle rgl i gqjgrrnj may actuate it. Attention'is called to the guide opening 41 through which the stem 40 passes downwardly and to the fact that this-guide opening is in the form of an the pawl 22 and the rock shaft 37 to their normal positions. The shoes may then be raised by applying the crank or lever 31 to the socket 30 and rotating the liftingchain wheel or drum 25. In this connection attention is called to the fact that if the catch 44 is not first released the shoes cannot be held up, although the lifting chain drum 27 has been rotated, because the pawl will be held out of engagement with its ratchet wheel. For this reason, the device constitutes means for preventing a car from being used by a person who does not understand its mechanism for if the car is left standing the shoes can be released and the car cannot then be operated until the shoes are raised; and a person not familiar with the mechanism of the car would not understand how to lock the shoes raised even if he discovered how to raise them.

In using the device to perform the functions of a jack to raise the rear wheels oil the around, the car would be advanced at a low-speed and the shoes would then be released. This would bring the car to a stop with the shoes on the ground and raise the rear wheels clear of the ground. By means .of the crank 31 the shoes can be raised and the rear end of the frame permitted to come down easily to let the wheels rest again on the earth. 7

The device is also useful to prevent skidding of the rear wheels. In this connection it will prevent accidents and arrest the dad gerous swinging movement of the rear part of'the vehicle which often takes place when skidding occurs. \Vhen used to perform the function of a jack, attention is called to the fact that the deviqe raises both wheels; in this Way it is more e 'flective than an ordinary jack as usually a plied under one end of the axle which ten s to twist the frame and other parts out of their proper alinement.

What we claim and desire to secure by Letters Patent is:

l. A vehicle having a frame, an axle, and wheels on said axle, brake shoes pivotally connected to said axle and adapted to descend to the ground, a pair of arms pivotally mounted on said frame and connected with said brgke shoes, a ratchet wheel rigid with said aqua on the pivotal axis thereof, a pawl cofipcrating with said ratchet wheel to hold said shoes normally raised, and means for releasing said pawl to permit said shoes to descend.

2. A vehicle having a frame, an axle, and wheels carried by said axle, a pair of brake shoes adapted to descend to the ground, holding means for normally holding said brake shoes elevated, a foot-plate adapted to move forward to release said brake-shoes to permit their descent, locking means for holding said foot-plate against return, arranged to release said foot-plate by a backward movement of said plate, bumpers at the forward end' of said frame, alevercarrying said foot plate, and for actuating said holding means, and means for actuating said lever by said bumpers.

3. A vehicle havin a frame, an axle, and wheels on said axle, irake-sho'es adapted to descend to engage the ground, means for normally holding the same raised, a footplate having a pivoted stem, a member actuated by a forward movement thereof to re lease said shoes, bumpers adapted to actuate said member to release said shoes, and means for locking said stem against return after being actuated, said stem being arranged to release from said last means by a rearward movement.

4. A vehicle having a frame, an axle and.

wheels on said axle, brake shoes, a rockshaft controlling the application of said brakeshoes, an arm rigid with said rockshaft, a foot plate having a stem pivoted to said rock-shaft, a foot rest, means under said foot rest for locking said stem against geturn after actuation by said foot plate, aid last locking means being arranged to release said stem by a reverse movement of said foot-plate.

5. A vehicle having a frame, an axle, and wheels on said axle, brake-shoes, means for normally holding the same unapplied, a rock-shaft, means actuated thereby for releasing said brake-shoes, a rigid arm on said rock-shaft, a foot plate having a stem pivotally attached to said arm for actuating said roclcshaft, said stem having a hook at the lower end thereof, a hook late for engaging said hook to lock the said foot plate against return when depressed, and means tending to return said foot plate, said stem being arranged to release from said hookplate by a reverse movement of said hookplates 6. A vehicle having a frame, brake-shoes movably supported by said frame, a rockshaft, means actuated thereby for controlling said brake-shoes, a 'rigi arm on said roclcshaft, a foot plate having a stem pivoted on said arm, a fixed hook-plate, said stem having a catch formed thereupon adapted to move toward and engage said foot plate when said stem is depressed by a forward movement of 'said hook-plate to 

